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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: James C. Wyant
  • Vol. 47, Iss. 15 — May. 20, 2008
  • pp: 2888–2896

Design of a polarized head-mounted projection display using ferroelectric liquid-crystal-on-silicon microdisplays

Rui Zhang and Hong Hua  »View Author Affiliations


Applied Optics, Vol. 47, Issue 15, pp. 2888-2896 (2008)
http://dx.doi.org/10.1364/AO.47.002888


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Abstract

It has been a common problem in optical see-through head-mounted displays that the displayed image lacks brightness and contrast compared with the direct view of a real-world scene. This problem is aggravated in head-mounted projection displays in which multiple beam splitting and low retroreflectance of a typical retroreflective projection screen yield low luminous transfer efficiency. To address this problem, we recently proposed a polarized head-mounted projection display (p-HMPD) design where the polarization states of the light are deliberately manipulated to maximize the luminous transfer efficiency. We report the design of a compact p-HMPD prototype system using a pair of high-resolution ferroelectric liquid-crystal-on-silicon (FLCOS) microdisplays. In addition to higher resolution, the FLCOS displays have much higher optical efficiency than a transmissive-type liquid crystal display (LCD) and help to further improve the overall light efficiency and image quality. We detail the design of a compact illumination unit for the FLCOS microdisplay, also commonly referred to as the light engine, and a projection lens, both of which are key parts of the p-HMPD system. The performances of the light engine and projection lens are analyzed in detail. Finally, we present the design of a compact p-HMPD prototype using the custom-designed light engine and projection optics.

© 2008 Optical Society of America

OCIS Codes
(120.2040) Instrumentation, measurement, and metrology : Displays
(120.2820) Instrumentation, measurement, and metrology : Heads-up displays
(120.4570) Instrumentation, measurement, and metrology : Optical design of instruments
(120.4820) Instrumentation, measurement, and metrology : Optical systems

ToC Category:
Instrumentation, Measurement, and Metrology

History
Original Manuscript: February 28, 2008
Manuscript Accepted: April 7, 2008
Published: May 15, 2008

Citation
Rui Zhang and Hong Hua, "Design of a polarized head-mounted projection display using ferroelectric liquid-crystal-on-silicon microdisplays," Appl. Opt. 47, 2888-2896 (2008)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-47-15-2888


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References

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